NXP Semiconductors KE1xF Series, Reference Manual, Page: 799 / 1483

Chapter 36
General-Purpose Input/Output (GPIO)
36.1 Chip-specific information for this module
36.1.1 Instantiation Information
The number of GPIO signals available on the devices covered by this document are
detailed in the "Ordering information" of the DataSheet.
See Pin properties for features of each pins.
Port control and interrupt module features are supported, each 32-pin port will support a
single interrupt.
36.2 Introduction
The GPIO registers support 8-bit, 16-bit or 32-bit accesses.
The GPIO data direction and output data registers control the direction and output data of
each pin when the pin is configured for the GPIO function. The GPIO input data register
displays the logic value on each pin when the pin is configured for any digital function,
provided the corresponding Port Control and Interrupt module for that pin is enabled.
Efficient bit manipulation of the general-purpose outputs is supported through the
addition of set, clear, and toggle write-only registers for each port output data register.
36.2.1 Features
Features of the GPIO module include:
• Port Data Input register visible in all digital pin-multiplexing modes
Kinetis KE1xF Sub-Family Reference Manual, Rev. 4, 06/2019
NXP Semiconductors 799